Waterproofing and polishing compound for wood



Patented Feb. 19,1935

PATENT OFFICE WATERPROOFING AND, POLISHING COM- POUND FOR WOOD Harvey G.Kittredge, Dayton, Ohio, assignor to The Kay & Ess Chemical Corporation,Dayton, Ohio, a corporation of Delaware No Drawing. Original applicationJune 15, 1932, Serial No. 617,471. Divided and'this application August31, 1933, Serial No. 687,725

11 Claims.

My invention relates to a new article of manufacture for use as awaterproofing and polishing compound for wood, to the method ofmanufacture, and to the method of application to the wood.

It is the object of my invention to provide a waterproofing compoundcapable of taking a high polkh that is not affected by such materials asacetone, which gives .a high lustre finish to the wood treated andimpregnates the wood to render it waterproof. v

It is a further object. to provide sucha compound which is particularlyadaptable to shoe lasts, shoe heels and the like, which is capable.

of not only takinga high polish but, upon becoming dull, to berepolished by additional bufling.

It is a further object to provide such a compound in combination withwood as to form an extremely smooth surface so that the last and shoecan be parted without'the necessity of chalking the last and without thenecessity of heel stripping, thereby effecting a very material economyin the production of shoes.

It is my object to provide a compound which will not be affected by theacetone in the cellastic backing employed in connection with thebuilding of shoes on wooden shoe lasts.

In particular, it is my object to provide a compound comprising varnishand wax applied.

to the wood to be treated simultaneously, the compound being allowed topenetrate the wood and become an integral part thereof. The result is awaterproof piece of wood which can be repeatedlybuifed and repolished,which has a finish that is very smooth and very hard and which resistsmade as follows: I melt pounds of rosin ester,

which is a combination of rosin and glycerin, in 28 gallons of rawChina-wood oil. I melt the mixture until the temperature reaches 400Fahrenheit and I then add 3 pounds of litharge runing the temperature upto 560-570 Fahrenheit. I then add immediately 50 pounds more of therosin ester stirring until melted which will bring down the temperatureto about 550 Fahrenheit. I then add pound of precipitated cobaltlinoleate. I then cool the mixture to 440-450" Fahrenheit. Thereafter, Iadd gallons of petroleum naphtha. This completes the spar varnish.

- It will be understood that various types of varnish can be employed,but I prefer a spar-varnish of this compound.

I mix 10% gallons of this spar varnish with the following: 4% gallons ofChina-wood oil which has been heated to 400 Fahrenheit for about 3hours; 40 gallons of petroleum naphtha or coal tar penetrating agent andthinners; 5 gallons of gum turpentine or wood turpentine or anyequivalent pine oil having similar characteristics; /2 gallon ofmanganese drier made by dissolving 3 pounds of manganese resinate in onegallon of turpentine; 4 gallon of tri-metal drier comprised of leadlinoleate, cobalt linoleate and manganese linoleate with turpentine. Thelatter trimetal drier is made up according to the formula of 385 poundsof lead linoleate, 887 pounds of cobalt linoleate, 14 pounds ofmanganese linoleate and 1202 gallons of turpentine, either gum or woodturpentine.

I then place in approximately a IS-gallon container 45% pounds ofparaffin wax and melt it therein; and I then add, while the wax is warm,the above mixture to the extent of 60/2 gallons constantly stirring asthe material is mixed and kept in melted condition. I then allow it tocool whereupon my compound is in finished condition.

It will be understood that in the place of paraffin wax I may employbeeswax, ceresin wax, czokerite, japan wax, bayberry wax, candelilla, orhard pressed stearic acid. Other equivalent waxes may be employed.

The function of the spar varnish with these constituent gums is toimpart a hard waterproof finish, the surface of which is capable oftaking a hard polish. The oils employed in the varnish and in themixture of the waxes with the varnish are for the purpose of carryingthe compound into the texture of the wood and to make it waterresisting. The thinner also helps to permeate the wood and to cause aneven fiow over the surface and into the wood. The drier facilitates airdrying of the wood after it has been treated as hereinafter described.

The interior waterproofing is carried out by the penetration of theChina-wood oil, while the exterior hard polish in combination 'with thewaxes is facilitated by the gums, such as the rosin ester. The waxresists acetone action,

facilitates the polishing of the surface, fills the surface pores of thewood and acts as a further waterproofing medium on the surface of thewood.

.The process of applying this compound to the wood is as follows: Thefinished last or heel blocks, made of such woods as maple, which areextremely hard, are dipped in this compound of invention at roomtemperature for approximately minutes, or more. It is then drained ofthe surplus liquid and allowed to dry. After it has air dried for aperiod of from 12 to 24 hours, room temperature, depending upon currentmoisture and temperature conditions, it is polished resulting in anatural wood finish revealing the grain of the wood. An ordinary woodlast is penetrated a considerable distance below its surface by thiscompound and, inmany instances, is completely saturated throughout withit.

The resulting finish is extremely smooth and waterproof.

In the manufacture of shoes, the finish is such that the presentpractice of chalking the lastsis eliminated. The sticking of theacetone, as in the use of cellastic backing, is eliminated as the hard,very compound is imperviousto acetone action. Heel ployed, but I havefound that the proportions.

indicated in actual practice are successful and satisfactoryproportions. Naturally, such proportions are varied according to theconditions under which the compound is employed and varying conditionsof temperature and humidity as well as variations in the naturalproduct, such as the wood being treated.

I comprehend within my invention the practice of expediting theapplication of this material of my invention by placing the wood in achamber subjected to a vacuum of approximately 2-4 inches and, when theair has been withdrawn from the wood, I then apply the compound so thatit will cover the lasts or other wood articles; and, thereafter, I apply50-60 pounds of pressure to force the compound into the wood so that itwill thoroughly penetrate the wood. Thereafter, the lasts are drainedand dried.

It will be understood that when I refer to a last I refer to any articleof wood. I

It will be further understood that I, desire to comprehend within myinvention such modifications as may be necessary to adapt it to varyingconditions and uses.

This application is a division of my application Ser. No. 617,471 filedJune 15, 1932. 1

Having thus fully'described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. A new article of manufacture consisting ofa wooden last or heel blockof waterproof characterimpregnated' with a compound consisting of awaterproof varnish, a wax, and a drying oil, said drying oil serving asa penetrant for carrying said varnish and a part of the wax into thewood.

2. A new article -of manufacture consisting of a wooden last or heelblock of waterproof character impregnated with a compound consisting ofa waterproof varnish, a wax and a heat bodied drying oil, said heatbodied driyng oil serving as a pentrant for carrying said varnish and apart of the wax into the wood.

3. A newarticle of manufacture consisting of a wooden last or heel blockof waterproof character impregnated with a compound consisting of awaterproof varnish, a wax, and a China- I wood oil, said China-wood oilserving as a penetrant for carrying said varnish and a part of the waxinto the wood.

4. A new article of manufacture consisting of a wooden last or heel.block of waterproof character impregnated witha compound consisting of awaterproof varnish, a wax, a drying oil, and a thinner, said drying oilserving as a penetrant for carrying said varnish and a part of the waxinto the wood, the wax remaining on the surface rendering said surfacecapable of taking a high polish.

5. A new article of manufacture consisting of a wooden last or heelblock of waterproof character impregnated with a compound consisting ofthe following ingredients given in the following proportions: 10 gals.of spar varnish, 45% lbs.

of paraflin wax, and 4 gals. China-wood oil, said China-wood oil servingas a penetrant for carrying said varnish and a part of said wax into thewood. 1 6. In a process of treating wooden lasts and heel blocks, tomake them waterproof and immune from the effects of acetone, consistingof exhausting the air from the lasts and heel blocks,

treating the shaped lasts and heel blocks to a composition including awaterproof varnish, a wax, and a drying oil, the drying oil being insuch quantities as to carry the varnish and a portion of the wax intothe wood a distance such that the wood will be impregnated therewith.

7. In a process of treating wooden lasts and heel blocks to make themwaterproof and immune from the effects of acetone,consisting of treatingthe shaped lasts and heel blocks to a composition including a waterproofvarnish, a wax, a drying oil, and a thinner, the drying oil and thinnerbeing in such quantities as to carry the varnish and a portion of thewax into the wood a distance such that the wood will be impregnatedtherewith.

8. In a process of treating wooden lasts and heel blocks to make themwaterproof and immune from the effects of acetone, consisting oftreating the shaped lasts and heel blocks to a composition including awaterproof varnish, a wax, and a drying oil, the drying oil being insuch quantities as to carry the varnish and a portion of the wax intothe wood a distance such that the wood will be impregnated therewith.

9. In a process of treating wooden lasts and heel blocks to make themwaterproof and immune from the efiects of acetone, consisting ofexhausting the air from the lasts and heel blocks, immersing the lastsand heel blocks in a composition including a waterproof varnish, a wax,and a drying oil, and applying pressure to the wood and the compound toforce the compound into the wood so as to carry the varnish and aportion of the wax into the wood a distance such that the wood will beimpregnated therewith.

10. In a process of treating wooden lasts and heel blocks to make themwaterproof and immune from the effects of acetone, consisting ofexhausting the air from .the lasts and heel blocks, immersing the lastsand heel blocks in a composition including a waterproof varnish, a wax,a

drying oil, and a thinner, and applying pressure to the wood and thecompound to force the compound into the wood so as tocarry the varnishand a portion of the wax into the wood a distance such that the woodwill be impregnated therewith.

11. In a process of treating wooden lasts and heel blocks to make themwaterproof and immune from the effects of acetone, consisting ofexhausting the air from the lasts and heel blocks, immersing the lastsand heel blocks in a composition including a waterproof varnish, a wax,and

a China-wood oil, and applying pressure to the wood and the compound toforce the compound into the wood so as to carry the varnish and aportion of the wax into the wood a distance such that the wood will beimpregnated therewith.

HARVEY G. KI'I'IREDGE.

